I was having this issue with my Jandy JXI 400N heater that would constantly turn on, heat for a few minutes and then turn off and give a high limit, check IGT errors.
I was able to fix the issue by just replacing the TRV valve. I originally got the part from Amazon and ended up being incorrect even though the part number was correct. I found the right one from aquapoolsupply.com and at a good price. Part is:
Jandy JXi Thermal Regulator Valve for Model 200/260/400 R0589700
Once I opened up the location of the TRV valve, you can see it was all corroded and also a small rock made its way in there.
I replaced the part and now the heater runs constantly with no errors! Thanks for various posts from this site, i was pointed in the right direction.
Remember to depressurize the pool equipment cause water flows right thru the TRV valve.
I was able to fix the issue by just replacing the TRV valve. I originally got the part from Amazon and ended up being incorrect even though the part number was correct. I found the right one from aquapoolsupply.com and at a good price. Part is:
Jandy JXi Thermal Regulator Valve for Model 200/260/400 R0589700
Once I opened up the location of the TRV valve, you can see it was all corroded and also a small rock made its way in there.
I replaced the part and now the heater runs constantly with no errors! Thanks for various posts from this site, i was pointed in the right direction.
Remember to depressurize the pool equipment cause water flows right thru the TRV valve.
